Marijuana smell - effect on baby

We live in a flat. We don't know our upstairs neighbour that well but he seems like a nice bloke.

I think he smokes weed maybe a couple times a week and when he does, some areas of my flat smell like weed. It's not coming in the window vents because when I open the window it smells fresh outside, not 'weedy'. I think he's smoking indoors and it's permeating through our ceilings. The smell alone does not really bother me but I am concerned about any negative impact on our health particularly that of my 8mo DS.

If I can smell weed does that mean smoke is entering my home? I know second hand smoke is harmful. Or is it just the smell, and is this harmful?

My entire street stank of weed for the first 2 years of DDs life, she survived. I don't think the smell is going to harm her, but I'd be more pissed off than you are, when you live in a block of flats you have to have some extra consideration for your neighbours, tell him to bog off outside with his weed. It could then come through the window instead of course.

Thanks all - I'm less annoyed than I would normally be because he's sold his flat so shouldn't be for much longer. Yeah I did think about asking him to go outside but then I think it would come through baby's window vents. He might smoke more often than twice a week but maybe has heavy sessions twice a week which makes my flat smell? Or maybe he's growing cannabis

And that's your choice. But cannabis is just a plant, the smell is not intrinsically evil or harmful, and won't make op's baby high! It's fine to say you wouldn't tolerate it and it's also fine to like the smell.